package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.dto.DishDTO;
import com.sky.dto.DishPageQueryDTO;
import com.sky.entity.Category;
import com.sky.entity.Dish;
import com.sky.entity.DishFlavor;
import com.sky.entity.SetmealDish;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.DishFlavorMapper;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealDishMapper;
import com.sky.result.PageResult;
import com.sky.service.DishService;
import com.sky.vo.DishVO;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.ArrayList;
import java.util.List;


@Service
public class DishServiceImpl implements DishService {


    @Autowired
    private DishMapper dishMapper;
    @Autowired
    SetmealDishMapper setmealDishMapper;
    @Autowired
    private DishFlavorMapper dishFlavorMapper;

    @Override
    @Transactional
    public void saveDish(DishDTO dishDTO) {
        Dish dish = new Dish();
        BeanUtils.copyProperties(dishDTO, dish);
        dishMapper.saveDish(dish);
        Long id = dish.getId();
        List<DishFlavor> flavors = dishDTO.getFlavors();
        if (flavors != null && flavors.size() > 0) {
            flavors.forEach(
                    dishFlavor -> {
                        dishFlavor.setDishId(id);
                    }
            );
            dishFlavorMapper.saveDishFlavor(flavors);
        }

    }

    @Override
    public PageResult pageQuery(DishPageQueryDTO dishPageQueryDTO) {
        PageHelper.startPage(dishPageQueryDTO.getPage(), dishPageQueryDTO.getPageSize());
        Page<DishVO> page = dishMapper.pageQuery(dishPageQueryDTO);
        return new PageResult(page.getTotal(), page.getResult());
    }


    @Override
    @Transactional
    public void deleteBatch(List<Long> ids) {

        for (Long id : ids) {
            Dish dish = dishMapper.getById(id);
            if (dish.getStatus() == 1) {
                throw new DeletionNotAllowedException("亚雷🐎不准删");
            }
        }


        List<SetmealDish> setmealDishList = setmealDishMapper.setmealDishByDishIds(ids);
        if (setmealDishList.size() > 0 && setmealDishList != null) {
            throw new DeletionNotAllowedException("亚雷🐎不准删");
        }

        for (Long id : ids) {
            dishMapper.deleteById(id);
            dishFlavorMapper.deleteByDishId(id);
        }


    }

    @Override
    public DishVO selectById(Long id) {

        Dish dish = dishMapper.selectById(id);
        List<DishFlavor> dishFlavorList = dishFlavorMapper.selectByDishId(id);
        DishVO dishVO = new DishVO();
        BeanUtils.copyProperties(dish, dishVO);
        dishVO.setFlavors(dishFlavorList);


        return dishVO;
    }

    @Override
    public void update(DishDTO dishDTO) {
        Dish dish = new Dish();
        BeanUtils.copyProperties(dishDTO, dish);
        Long id = dishDTO.getId();
        dishMapper.update(dish);

        dishFlavorMapper.deleteByDishId(id);
        List<DishFlavor> flavors = dishDTO.getFlavors();
        if (flavors != null && flavors.size() > 0) {
            flavors.forEach(
                    dishFlavor -> {
                        dishFlavor.setDishId(id);
                    }
            );
            dishFlavorMapper.saveDishFlavor(flavors);
        }


    }

    @Override
    public void startOrStop(Integer status, Long id) {

            Dish dish = Dish.builder()
                    .id(id)
                    .status(status)
                    .build();
            dishMapper.update(dish);

    }

    @Override
    public List<DishVO> selectBycategoryId(Long categoryId) {
        return  dishMapper.selectBycategoryId(categoryId);
    }

    /**
     * 条件查询菜品和口味
     * @param dish
     * @return
     */
    public List<DishVO> listWithFlavor(Dish dish) {
        List<Dish> dishList = dishMapper.list(dish);

        List<DishVO> dishVOList = new ArrayList<>();

        for (Dish d : dishList) {
            DishVO dishVO = new DishVO();
            BeanUtils.copyProperties(d,dishVO);

            //根据菜品id查询对应的口味
            List<DishFlavor> flavors = dishFlavorMapper.selectByDishId(d.getId());

            dishVO.setFlavors(flavors);
            dishVOList.add(dishVO);
        }

        return dishVOList;
    }
}
